Improvement in mole-plows



A. HAMMOND.

Mole-Plow.

No. 25.114. Patented Aug. 16. 1859.

I s s@ Witnesses:

inventor:

STATES PATENT FFIcE.

A. HAMMOND, OF JACKSONVILLE, ILLINOIS.

IMPROVEMENT IN MOLE-PLOWS.

To all whom it may concern:

Be it known that I, A. HAMMOND, of Jacksonville, in the county of Morganand State of Illinois, have invented a new and useful ImprovementinMole-Flows; and I do hereby declare that the following is afull, clear,and exact description thereof, reference being had to the accompanyingdrawings and the letters of reference marked thereon, of which- Figure 1represents a side elevation of the plow, showing the shoe and standardsunk in the ground. Fig.2is an end view of the shoe and standard. Fig. 3is a perspective view of the shoe detached from the standard.

My invention is an improvement upon the shoe or tooth ofthe mole ordrainage plow; and it consists in extending a portion of the tooth outbehind the standard and forming a furrow or groove in the upper surfaceof the same, diminishing as it reaches the extreme end, for the purposeof closing up the opening left by the standard, to prevent the ditchfrom filling up again. It also consists in forming or affixiug in anysuitable way a tin or angular-shaped knife to the sole of the shoe toopen a place along the bottom of the ditch for allowing the water topass up into the same and be drained off from below the ditch, describedand represented as follows.

'A represents a beam, ofthe usual length and strength,resting uponwheels B 0, two placed in front and one extending out from the rear. Thewheels serve to steady the beam and to prevent it from sinking in theground during the operation of ditching.

Near the rear end of the beam A is an adjustable standard, D, having itsfront edge beveled like a knifes edge for the purpose of cutting throughthe sods freely as the machine is drawn forward. This standard carrieson its lower end the shoe or tooth E, and is adjusted so as to raise ordepress it from the surface of the ground by a small pinion spur-wheel,not shown in the drawings, meshing into rackteeth on the standard, whichis fixed to a shaft carrying on one end a spur-wheel, F, which latterisoperated by an endless screw, G, turned by a crank-handle, H, the wholebeing mounted in a standard, J.

In front of the standard D is a friction-roller, K, which bears thestandards up against the pinion-wheel, and on the under sideof the beamat similar roller is pivoted, against which the standard presses duringthe operation of ditchin g. These rollers allow the standard to beraised or depressed while in the ground with as little friction aspossible.

The slide E which constitutes the essential feature of my invention andimprovement, is so formed thatit will pass through the ground withcomparatively very little friction. At the same time it will close upthe opening left by the standard and prevent the ditch filling up; andalso thata slit or opening will be made along the bottom of the ditch,through which water from below the ditch can enter, and in this waydrain the water 0H for some depth below the surface. For this purposethe sole of the shoe is made to pass through the ground parallel withthe standard, it being straight and flat.

The shoe tapers from the heel to the point, as shown by the drainings,Figs. 1 and 3, and has a projection, L, extending out and up from theheel, which has a channel or groove, a, in its upper surface, as clearlyshown by Fig. 3. The effect of this projection is to press the wet earthup and completely close the opening left by the standard.

Nis a fin or knife projecting down from the heel of the shoe, thefunction of which is to cut a channel in the center of the ditch, asabove explained.

WhatIclaim as my invention, and desire to secure by Letters Patent, is-

The shoe E, provided with a knife, N, and projection L, when they arearranged and operate in the manner and for the purposes herein setforth.

A. HAMMOND.

Witnesses F. MAGILL, LATHROP HAMMOND.

